Rocks Here Sequester Some of Mars’ Early Atmosphere
This view combines information from two instruments on NASA’s Mars Reconnaissance Orbiter to map color-coded composition over the shape of the ground in a small portion of the Nili Fossae plains region of Mars’ northern hemisphere. via NASA http://www.nasa.gov/image-feature/jpl/pia19817/rocks-here-sequester-some-of-mars-early-atmosphere
